Wicked 522, really love how you captured the details. The idea of the rims is smart. Found that combination quiet often in my lego box, but I never thought of using it.
Currently working on a Mercedes Benz 614 B from the Dutch Riot Police, we call them ME, from Mobiele Eenheid. But it will never be as good as your 522.
Wow! First of all, great part usage. I like how you used the skull/head pieces for hubs. There are some nice techniques used on this-like the building of the front grill, and the pillars. Looks pretty identical to the real vehicle.
Great work detailing such a small MOC. Great build! Keep building, my friend. -Anthony Dunne